CN108761524B - A kind of portable tunnel seismic wave forward probe system and method - Google Patents
A kind of portable tunnel seismic wave forward probe system and method Download PDFInfo
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- CN108761524B CN108761524B CN201810489231.1A CN201810489231A CN108761524B CN 108761524 B CN108761524 B CN 108761524B CN 201810489231 A CN201810489231 A CN 201810489231A CN 108761524 B CN108761524 B CN 108761524B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/16—Receiving elements for seismic signals; Arrangements or adaptations of receiving elements
- G01V1/18—Receiving elements, e.g. seismometer, geophone or torque detectors, for localised single point measurements
- G01V1/181—Geophones
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/16—Receiving elements for seismic signals; Arrangements or adaptations of receiving elements
- G01V1/20—Arrangements of receiving elements, e.g. geophone pattern
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/22—Transmitting seismic signals to recording or processing apparatus
- G01V1/223—Radioseismic systems
Abstract
The invention discloses a kind of portable tunnel 3-D seismics seismic wave forward probe system and methods, it is installed on tunnel side wall using three-component geophone, the seismic wave waveform on tri- directions x/y/z is obtained, and a three-component geophone is correspondingly connected with a transmitting unit by wired mode；Transmitting unit and receiving unit correspond, the corresponding receiving unit group of different transmitting units is to work in different frequency range, for multiple receiving units by cascade, no maximum extension can be carried out by forming three-component geophone quantity, need to only increase corresponding transmitting unit and receiving unit；The present invention may be used in combination two kinds of seismic wave forward probe methods of active source and broken rock focus；The system has Time Synchronization Mechanism, can guarantee that different three-component geophones measure the time consistency of seismic wave waveform to greatest extent.
Description
Technical field
The present invention relates to a kind of portable tunnel seismic wave forward probe system and methods.
Background technique
Such as tomography, crushed zone bad geological phenomenon are often met with during constructing tunnel, if cannot visit in advance
Bright tunnel tunnel face front whether there is unfavorable geologic body, it will lead to serious security risk, it is most likely that personnel is caused to hurt
It dies, construction delay and heavy economic losses.Therefore the unfavorable geologic body for verifying tunnel tunnel face front preservation in advance, for ensureing
Safety for tunnel engineering has a very important significance.
Seismic wave forward probe method have detection range far and can effectively verify front of tunnel heading preservation tomography and
The advantages of unfavorable geologic bodies such as crushed zone is one of method mostly important in tunnel geological forecast.Seismic wave is visited in advance
Survey method can be divided into two kinds of method of active source seismic wave forward probe method and broken rock focus seismic wave forward probe, the former adopts
Manually focus (such as explosive, sledgehammer, super magnetic hysteresis flexible focus and hydraulic/pneumatic focus etc.) excites earthquake on tunnel side wall
Wave is detected；The vibration signal that the latter is generated when can directly be tunneled using rock tunnel(ling) machine detects, without passing through
Man-made explosion earthquake-wave-exciting.
There is some commercial lands/tunnel seismic wave detection system at present, but the main problems are as follows:
(1) for the detection system having using wired connection mode and centralized detection principle, arrangement detection cable work is time-consuming
Arduously, it is not easy to be detected under tunnel complex environment.
(2) detection system having can not obtain on tri- directions tunnel side wall x/y/z only with simple component wave detector
Seismic wave waveform, and wave detector quantity is extremely limited to be extended, the form that can only increase acquisition terminal equipment realizes three
Component signal acquisition causes inconvenient for use, data to synchronize situation difficult, that equipment cost is high.
(3) internal storage space of most of detection system is extremely limited, can not carry out carrying out data acquisition for a long time, because
This only supports triggering collection mode, is not used to broken rock focus seismic wave forward probe method.
Summary of the invention
The present invention to solve the above-mentioned problems, proposes a kind of portable tunnel seismic wave forward probe system and method,
The present invention has lightweight and convenient, is easy to carry about with one, storage the advantages of not taking up space.
To achieve the goals above, the present invention adopts the following technical scheme:
The first object of the present invention is to provide a kind of portable tunnel seismic wave forward probe system, including industrial personal computer, master
Control unit, receiving unit, focus, transmitting unit and three-component geophone, in which:
The three-component geophone is installed on tunnel side wall, can obtain the seismic wave waveform on tri- directions x/y/z, and
One three-component geophone is correspondingly connected with a transmitting unit by wired mode；The main control unit and each transmitting unit
Between wirelessly carry out data transmission；It is attached between the main control unit and industrial personal computer；The main control unit is logical
Cross wired mode connection focus；
Detection system is configured in triggering collection mode or continuous acquisition mode, and focus taps when triggering collection mode
Tunnel surrounding generates trigger signal, and trigger signal is sent to main control unit, and main control unit assigns the instruction of triggering collection, and leads to
It crosses receiving unit and is sent to transmitting unit starting acquisition function；Industrial personal computer sends continuous acquisition to main control unit when continuous acquisition mode
Instruction, main control unit control transmitting unit starting acquisition function by receiving unit.
The transmitting unit and receiving unit correspond, and the group that different transmitting units and receiving unit are formed is to work
In different frequency range, carries out parallel wireless data transmission and do not interfere with each other.
The multiple receiving unit can be cascaded by daisy chain form, the data that receiving unit receives itself and
Data from previous stage are successively transmitted to rear stage；Particularly, all data are transmitted to master control by afterbody receiving unit
Unit.
The three-component geophone quantity can carry out no maximum extension, need to only increase corresponding transmitting unit and receiving unit
?.
The transmitting unit include wireless module, the first controller, FIFO buffer, SRAM memory, high precision clock,
Converter, signal conditioning circuit, power management module and rechargeable battery, the transmitting unit can be supplied by rechargeable battery
Electricity, power management module carry out management of charging and discharging to rechargeable battery；Wireless module can receive the letter of the control from receiving unit
Number and be sent to the first controller, the first controller sends answer signal and status information to unit is received by wireless module；In height
Under the control of accuracy clock, three road converters have the clock signal of stringent synchronization, when transmitting unit is received from receiving unit
Synch command after restart high precision clock immediately；Three-component geophone can acquire on tunnel side wall on tri- directions x/y/z
Seismic wave waveform, waveform in each direction is processed into digital letter after signal conditioning circuit and converter respectively
Number, it is subsequently sent to FIFO buffer and carries out data buffer storage；First controller is fetched evidence from FIFO buffer, executes compression algorithm
Compressed data are stored in SRAM memory, the first controller can also be from by data after compression and leading in SRAM memory
It crosses wireless module and sends receipts unit.
Due to using data compression algorithm in transmitting unit, data volume is reduced, therefore improve wireless data biography
Defeated speed.
Further, the clock generating circuit that the high precision clock has temperature-compensating, frequency accuracy high, makes one
It fixes time in range, avoids long time continuous working between each transmitting unit under same use environment because of clocking error
Caused data acquisition difference walks and causes mistake, and clock accuracy is better than 0.1ppm.
The transmitting unit has unique ID, and each ID transmitting unit can be with the position one of the three-component geophone of connection
One is corresponding, i.e., the same ID transmitting unit placement location is constant and while connecting the wave detector of different detection positions can redefine
The sequence of data processing can refuse to access the safety to guarantee data simultaneously for illegal ID system.
Further, the ID of the transmitting unit is made of 2 bytes, and high byte is group address (group number), and low byte is
Terminal address (terminal number).
The group address refers to that this high byte is worth all terminals composition that identical, RF channel is identical, terminal address is different
One group.The terminal address is that same group address, RF channel be identical, different low byte values, to distinguish each receiving unit
And transmitting unit.The same group address, the receiving unit of difference RF channel and transmitting unit are not one group.Described same group,
When needing to increase new terminal, as long as configuration transmitting unit is that identical group number, RF channel, different terminal numbers can be completed.
The receiving unit includes wireless module, second controller and dma controller；The wireless module will receive
Data from transmitting unit are sent to second controller, and second controller sends the data to dma controller, the DMA control again
There is device data buffer storage and data to transmit control function；Control command can be sent to transmission by wireless module by second controller
Unit, can also be by wireless module reception come the answer signal and status information of sending unit.
Rear class data-interface, rear class control interface, the rear class power interface of the receiving unit are received with rear stage respectively
Prime data-interface, prime control interface, the prime power interface of unit are connected；Particularly, after afterbody receiving unit
Grade data-interface, rear class control interface, rear class power interface connect with the data-interface of main control unit, control interface and power supply respectively
Mouth is connected.
The main control unit between above-mentioned daisy chain cascading mode and different receiving units by carrying out data transmission, controlling
Information exchange and power supply supply.
The main control unit is mainly by dma controller, high precision clock, trigger signal detection module, third controller, electricity
The data received are sent to third controller by source module and USB module composition, dma controller, and third controller will connect first
After the compressed data decompression received, industrial personal computer is then sent to via USB data line by USB module；Industrial personal computer and third control
The interaction of control command, answer signal and status information can be carried out between device processed by USB module；Industrial personal computer can pass through power supply
Module is powered to main control unit；High precision clock can provide high-precision clock source signals for third controller；When work is being touched
When sending out acquisition mode, focus can produce a trigger signal after tapping tunnel surrounding, when trigger signal detection module detects
After trigger signal, notice third controller generates the control command of a triggering collection.
Further, corresponding control command is sent to main control unit by the industrial personal computer, after main control unit resolve command simultaneously
Multiple transmitting units are successively sent to by ordering, return to answer signal, master control list to main control unit after transmitting unit resolve command
Member returns to the multiple answer signals received in the status display interface of industrial personal computer.
Further, the industrial personal computer can be independently controlled each transmitting unit, including groundwork parameter configuration,
Signal acquisition parameter configuration, control etc., groundwork parameter configuration include the ID, wireless communication rate, channel radio of transmitting unit
Believe signal power, RF channel etc., signal acquisition parameter configuration includes sample rate, acquisition duration (or acquisition points), gain, starting
Data delay etc., control includes sleeping/waking, synchronization, starting/stopping sampling, call data, empty data and/or data are adopted
Integrated mode etc..
The data acquisition scheme can be set to triggering collection mode or continuous acquisition mode.
Above-mentioned first controller, second controller and third controller are preferably FPGA.
The second object of the present invention is to provide a kind of working method based on above system, specifically includes head after system boot
First carry out self-test, detection main control unit connect with industrial personal computer it is whether normal, it is wireless between detection transmitting unit and receiving unit
Whether data communication is normal, detects the battery level information of transmitting unit, enters in next step if working properly, otherwise recycles
Self-test.
When selecting triggering collection mode, progress parameter setting first mainly includes data save location, sample rate and adopting
Collect time etc., main control unit sends synch command to multiple transmitting units in the form broadcasted and carries out time synchronization, main control unit
It detects and issues starting acquisition to all transmitting units in the form of broadcast after focus taps the trigger signal that tunnel surrounding generates
Order, to guarantee that log-on data acquires all transmitting units in the same time, the data after AD conversion are stored in by transmitting unit
In SRAM memory；After reaching the acquisition time of setting, transmitting unit stops AD conversion and passes through the data of storage wireless
Mode is sent to receiving unit, and main control unit will be transmitted to work by wired mode after data summarization that multiple receiving units receive
In control machine, the acquisition software installed in last industrial personal computer shows data in the form of waveform.
When selecting continuous acquisition mode, progress parameter setting first mainly includes data save location and sample rate etc.,
Main control unit sends synch command to multiple transmitting units in the form broadcasted and carries out time synchronization, then carries out velocity test,
For obtaining current wireless data transmission speed；Transmitting unit starts AD conversion immediately after starting acquisition, and will be after conversion
Data are stored in SRAM memory, repeat this process until stopping acquisition；While AD conversion and SRAM store,
Transmitting unit carries out wireless data transmission simultaneously, stored data are sent out, and acquisition software will constantly receive
Data are shown in the form of waveform；After starting continuous acquisition, it is synchronous that system carries out clock automatically at regular intervals.
It is as follows that continuous acquisition mode data stores and transmits principle: transmitting unit stores the data after AD conversion to SRAM
Speed v in memorywIt is known, the progress available current wireless data transmission speed v of velocity testt, available speed
Spend multiple n=[vw/vt] round up, so that SRAM memory is divided into a data field (n+1)；It is first first to store pointer
It is directed toward the first data field, the data after AD conversion are stored into the first data field, stores pointer after the storage of the first data field is full
It is moved to the second data field, repeats the above process, after data field (n+1) storage is full, storage pointer circulation is directed toward the first number
According to area；Only after the storage of the first data field is full, sends pointer and be just directed toward the first data field, the data in the first data field are led to
It crosses wireless mode to send, transmission pointer is moved to the second data field after having sent the data in the first data field, repeats
The above process after (n+1) has been sent when data field, sends pointer circulation and is directed toward the first data field, realizes circulation storage and send
Data.
Due to vw>vtAnd SRAM memory is divided into a data field (n+1), therefore can guarantee that data will not cover
It loses, can theoretically recycle storage limitless volumes data.
Compared with prior art, the invention has the benefit that
(1) the distributed signal acquisition system based on wireless data communication is used, without laying data-communication cables, earthquake
Wave wave detector can arbitrarily be arranged on tunnel side wall, and seismic wave forward probe can be easily carried out in tunnel；
(2) system uses three-component geophone, can obtain the seismic wave waveform on tri- directions tunnel side wall x/y/z,
And three-component geophone quantity can carry out no maximum expansion；；
(3) system has two kinds of operating modes of triggering collection and continuous acquisition, may be used in combination active source and broken rock shake
Two kinds of source seismic wave forward probe method；
(4) system has Time Synchronization Mechanism, can guarantee that different three-component geophones measure earthquake to greatest extent
The time consistency of wave waveform.
(5) system is using professional high speed 2.4GHz data transfer communications mode, and there is no the intelligent networks such as WIfi, ZigBee
The command/data transmission of network ensure that signal acquisition because of the uncertainty being delayed caused by the reasons such as protocol layer interaction, message queue
The stringent synchronization of clock, the synchronization of phase and log-on data acquire Startup time while property.
(6) system realizes the safety of data, and industrial personal computer, main control unit carry out command/data friendship between transmitting unit
Mutually transmission has followed specific communication protocol, and data flow has carried out the measures such as data check, encryption, ensure that the correctness of data
And confidentiality.
(7) more RF channels of the system, ID coding mode make system have extraordinary scalability, and extension is flexible.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.
Fig. 1 is portable tunnel seismic wave forward probe system integrated stand composition；
Fig. 2 is transmitting unit structural block diagram；；
Fig. 3 is receiving unit and main control unit structural block diagram；
Fig. 4 is data acquisition flow figure；
Fig. 5 is that continuous acquisition mode data stores and transmits schematic diagram；
Wherein, 1. industrial personal computer, 2.USB data line, 3. main control units, 4. focus, 5. transmitting units, 6. three component geophones
Device, 7.USB module, 8.FPGA, 9. trigger signal detection modules, 10. power modules, 11. downlink command buffer areas, 12. uplinks
Data buffer zone, 13. wireless modules, 14.SRAM memory, 15. power management modules, 16. rechargeable batteries, when 17. high-precision
Clock, 18.AD converter, 19. signal conditioning circuits, 20.FIFO buffer, 21. acquisition softwares, 22. parameter settings, 23. states
It has been shown that, 24. time synchronizations, 25. data show that 26. start to acquire, and 27. stop acquisition, 28. receiving units, 29.DMA control
Device.
Specific embodiment:
The invention will be further described with embodiment with reference to the accompanying drawing.
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
In the present invention, term for example "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", " side ",
The orientation or positional relationship of the instructions such as "bottom" is to be based on the orientation or positional relationship shown in the drawings, only to facilitate describing this hair
Bright each component or component structure relationship and the relative of determination, not refer in particular to either component or element in the present invention, cannot understand
For limitation of the present invention.
In the present invention, term such as " affixed ", " connected ", " connection " be shall be understood in a broad sense, and indicate may be a fixed connection,
It is also possible to be integrally connected or is detachably connected；It can be directly connected, it can also be indirectly connected through an intermediary.For
The related scientific research of this field or technical staff can determine the concrete meaning of above-mentioned term in the present invention as the case may be,
It is not considered as limiting the invention.
A kind of portable tunnel seismic wave forward probe system, integrated stand composition as shown in Figure 1, mainly by industrial personal computer 1,
USB data line 2, main control unit 3, receiving unit 28, focus 4, transmitting unit 5 and three-component geophone 6 form.It wherein acquires soft
In industrial personal computer 1, industrial personal computer 1 is carried out data transmission by USB data line 2 with main control unit 3 part 21, and focus 4 passes through wired side
Formula is connected on main control unit 3.Three-component geophone is installed on tunnel side wall, can obtain the earthquake on tri- directions x/y/z
Wave waveform, a three-component geophone 6 are connected by wired mode with a transmitting unit 5, and main control unit 3 can be by wireless
Carry out data transmission between mode and multiple transmitting units 5.
Portable tunnel seismic wave forward probe system has two kinds of operating modes of triggering collection and continuous acquisition.
Specifically, focus taps tunnel surrounding generation trigger signal when triggering collection mode, and trigger signal is sent to master
Unit 3 is controlled, main control unit 3 assigns the instruction of triggering collection, and is sent to the starting acquisition function of transmitting unit 5 by receiving unit 28
Energy；Industrial personal computer 1 sends continuous acquisition instruction to main control unit 3 by USB data line 2 when continuous acquisition mode, and main control unit 3 is logical
It crosses receiving unit 28 and controls the starting acquisition function of transmitting unit 5.
Work that transmitting unit 5 and receiving unit 28 correspond, different " transmitting unit 5 --- receiving unit 28 to " is not
Same frequency range can carry out parallel wireless data transmission and not interfere with each other.Multiple receiving units 28 can carry out grade by daisy chain form
Connection, the data that receiving unit 28 receives itself and the data from previous stage are successively transmitted to rear stage；Particularly, finally
All data are transmitted to main control unit 3 by Primary Receive unit 28.6 quantity of three-component geophone can carry out no maximum expansion
Exhibition need to only increase corresponding transmitting unit 5 and receiving unit 28.
Transmitting unit structural block diagram as shown in Fig. 2, transmitting unit 5 mainly by wireless module 13, FPGA 8, FIFO buffer
20, SRAM memory 14, high precision clock 17, converter 18, signal conditioning circuit 19, power management module 15 and charging electricity
Pond 16 forms.Transmitting unit 5 can be powered by rechargeable battery 16, and power management module 15 can carry out rechargeable battery 16
Management of charging and discharging；Wireless module 13 can receive the control signal from receiving unit 28 and be sent to FPGA 8, and FPGA 8 can be with
Answer signal and status information are sent to unit 28 is received by wireless module 13.
Under the control of high precision clock 17, three road converters 18 have the clock signal of stringent synchronization, when transmitting is single
Member 5 restarts high precision clock 17 after receiving the synch command from receiving unit 28 immediately；Three-component geophone 6 can acquire tunnel
Seismic wave waveform on road abutment wall on tri- directions x/y/z, waveform in each direction pass through 19 He of signal conditioning circuit respectively
It is processed into digital signal after converter 18, FIFO buffer 20 is subsequently sent to and carries out data buffer storage；FPGA 8 can be from
It fetches in FIFO buffer 20 evidence, executes compression algorithm and compressed data are stored in SRAM memory 14, FPGA 8 can also
Receipts unit 28 is sent with the data after it will compress in SRAM memory 14 and by wireless module 13.
Due to using data compression algorithm in transmitting unit 5, data volume is reduced, therefore improve wireless data biography
Defeated speed.
The clock generating circuit that high precision clock 17 has temperature-compensating, frequency accuracy high, makes in certain time range
It is interior, long time continuous working between each transmitting unit under same use environment is avoided because of data caused by clocking error
Acquisition difference walks and causes mistake, and clock accuracy is better than 0.1ppm.
Each transmitting unit 5 has unique ID, and each ID transmitting unit can be with the position of the three-component geophone 6 of connection
Correspond, i.e., same 5 placement location of ID transmitting unit it is constant and connect it is different detection positions wave detector when can be again
The sequence for defining data processing, can refuse to access the safety to guarantee data simultaneously for illegal ID system.The ID is by 2
Byte is constituted, and high byte is group address (group number), and low byte is terminal address (terminal number).
Group address refers to that this high byte is worth the one of all terminals composition that identical, RF channel is identical, terminal address is different
Group.The terminal address is that same group address, RF channel be identical, different low byte values, to distinguish each 28 He of receiving unit
Transmitting unit 5.
Same group address, the receiving unit 28 of difference RF channel and transmitting unit 5 are not one group.
Same group, when needing to increase new terminal, as long as configuration transmitting unit 5 is identical group number, RF channel and different
Terminal number can be completed.
Receiving unit and main control unit structural block diagram as shown in figure 3, the main wireless module 13 of receiving unit 28, FPGA 8,
Dma controller 29 forms.The data from transmitting unit 5 received are sent to FPGA 8 by wireless module 13, and FPGA 8 again will
Data are sent to dma controller 29, and there is the dma controller 29 data buffer storage and data to transmit control function；FPGA 8 can be with
Control command is sent to transmission unit 5 by wireless module 13, can also be received by wireless module 13 come sending unit 5
Answer signal and status information.
Rear class data-interface, rear class control interface, the rear class power interface of receiving unit 28 receive with rear stage single respectively
Prime data-interface, prime control interface, the prime power interface of member 28 are connected；Particularly, afterbody receiving unit 28
Rear class data-interface, rear class control interface, rear class power interface respectively with the data-interface, control interface, power supply of main control unit 3
Interface is connected.Main control unit 3 be exactly by carrying out data transmission between above-mentioned daisy chain cascading mode and different receiving units 28,
Control information exchange and power supply supply.
Main control unit 3 is mainly by dma controller 29, high precision clock 17, trigger signal detection module 9, FPGA 8, power supply
Module 10 and USB module 7 form.The data received are sent to FPGA8, the pressure that FPGA 8 will be received first by dma controller
After contracting data decompression, industrial personal computer 1 is then sent to via USB data line 2 by USB module 7；Between industrial personal computer 1 and FPGA 8
The interaction of control command, answer signal and status information can be carried out by USB module 7；Industrial personal computer 1 can pass through power module 10
It powers to main control unit 3；High precision clock 17 can provide high-precision clock source signals for FPGA 8；When work is in triggering collection
When mode, focus 4 can produce a trigger signal after tapping tunnel surrounding, when trigger signal detection module 9 detects triggering
After signal, notice FPGA 8 generates the control command of a triggering collection.
Corresponding control command is sent to main control unit 3 by industrial personal computer 1, after 3 resolve command of main control unit and will order according to
It is secondary to be sent to multiple transmitting units 5, answer signal is returned to main control unit 3 after 5 resolve command of transmitting unit, main control unit 3 will
The multiple answer signals received return in the status display interface of industrial personal computer 1.
Industrial personal computer 1 can be independently controlled each transmitting unit 5, including groundwork parameter configuration, signal acquisition
Parameter configuration, control etc., groundwork parameter configuration include the ID, wireless communication rate, wireless communication signals function of transmitting unit
Rate, RF channel etc., signal acquisition parameter configuration include sample rate, acquisition duration (or acquisition points), gain, initial data time delay
Deng, control samples including sleeping/waking, synchronization, starting/stopping, calling data, empties data, data acquisition scheme etc..It is described
Data acquisition scheme can be set to triggering collection mode or continuous acquisition mode.
Data acquisition flow figure as shown in figure 4, carry out self-test first after system boot, detection main control unit 3 and industrial personal computer 1
Whether connection is normal, and whether the wireless data communication detected between transmitting unit 5 and receiving unit 28 is normal, detects transmitting unit
5 battery level information enters in next step if working properly, otherwise recycles self-test.
When selecting triggering collection mode, progress parameter setting first mainly includes data save location, sample rate and adopting
Collect time etc., time synchronization then will be carried out between main control unit 3 and multiple transmitting units 5；Main control unit 3 detects focus 4
The order that starting acquires is issued to all transmitting units 5 in the form of broadcast after tapping the trigger signal that tunnel surrounding generates, with
Guarantee that log-on data acquires all transmitting units 5 in the same time, the data after AD conversion are stored in SRAM memory by transmitting unit
In 14；After reaching the acquisition time of setting, transmitting unit 5 stops AD conversion and wirelessly sends the data of storage
To receiving unit 28, main control unit 3 will be transmitted to industry control by wired mode after data summarization that multiple receiving units 28 receive
In machine 1, the acquisition software 21 installed in last industrial personal computer 1 shows data in the form of waveform.
When selecting continuous acquisition mode, progress parameter setting first mainly includes data save location and sample rate etc.,
Main control unit 3 sends synch command to multiple transmitting units 5 in the form of broadcast and carries out time synchronization, then carries out speed survey
Examination, for obtaining current wireless data transmission speed；Transmitting unit 5 starts AD conversion immediately after starting acquisition, and will conversion
Data afterwards are stored in SRAM memory 14, repeat this process until stopping acquisition；It is stored in AD conversion and SRAM
While, transmitting unit 5 carries out wireless data transmission simultaneously, and stored data are sent out, and acquisition software 21 is continuous
The data received are shown in the form of waveform；After starting continuous acquisition, when system carries out automatically at regular intervals
Clock is synchronous.
Continuous acquisition mode data stores and transmits schematic diagram as shown in figure 5, transmitting unit 5 deposits the data after AD conversion
Store up speed v in SRAM memory 14wIt is known, the progress available current wireless data transmission speed v of velocity testt,
Available speed multiple n=[vw/vt] round up, so that SRAM memory 14 is divided into a data field (n+1)；It deposits
Storage pointer is first initially directed to the first data field, and the data after AD conversion are stored into the first data field, the storage of the first data field
Storage pointer is moved to the second data field after full, repeats the above process, and after data field (n+1) storage is full, storage pointer is followed
Fourth finger is to the first data field；Only after the storage of the first data field is full, sends pointer and be just directed toward the first data field, by the first data
Data in area are wirelessly sent, and transmission pointer is moved to the second number after having sent the data in the first data field
According to area, the above process is repeated, after (n+1) has been sent when data field, pointer circulation is sent and is directed toward the first data field；Due to vw>vt
And SRAM memory 14 is divided into a data field (n+1), therefore can guarantee data will not coverage loss, theoretically can be with
Circulation storage limitless volumes data.
Above unspecified component uses finished device.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (10)
1. a kind of portable tunnel dimensionally seismic wave forward probe system, it is characterized in that: including industrial personal computer, main control unit, reception
Unit, focus, transmitting unit and three-component geophone, in which:
The three-component geophone is installed on tunnel side wall, obtains the seismic wave waveform on tri- directions x, y and z, and one
Three-component geophone is correspondingly connected with a transmitting unit by wired mode；Between the main control unit and each transmitting unit
Wirelessly carry out data transmission；It is attached between the main control unit and industrial personal computer；The main control unit is by having
Line mode connects focus；
The transmitting unit and receiving unit correspond, and the corresponding receiving unit group of different transmitting units is to work respectively
Make to form cascade between different frequency range, each receiving unit, the data and come from previous stage that receiving unit receives itself
Data be successively transmitted to rear stage, until being transmitted to main control unit；
It is extended by the cascade of transmitting unit and receiving unit, realizes the extension of the three-component geophone quantity；
The detection system is configured in triggering collection mode or continuous acquisition mode, and focus taps when triggering collection mode
Tunnel surrounding generates trigger signal, and trigger signal is sent to main control unit, and main control unit assigns the instruction of triggering collection, and leads to
It crosses receiving unit and is sent to transmitting unit starting acquisition function；Industrial personal computer sends continuous acquisition to main control unit when continuous acquisition mode
Instruction, main control unit control transmitting unit starting acquisition function by receiving unit.
2. portable tunnel as described in claim 1 dimensionally seismic wave forward probe system, it is characterized in that: transmitting unit includes
Wireless module, the first controller, FIFO buffer, SRAM memory, high precision clock, converter, signal conditioning circuit, electricity
Source control module and rechargeable battery, transmitting unit are powered by rechargeable battery, and power management module carries out rechargeable battery
Management of charging and discharging；Wireless module receives the control signal from receiving unit and is sent to the first controller, and the first controller passes through
Wireless module sends answer signal and status information to receiving unit；When transmitting unit receives the synch command from receiving unit
Restart high precision clock immediately afterwards；Three-component geophone acquires the seismic wave waveform on tunnel side wall on tri- directions x, y and z,
Waveform in each direction is processed into digital signal after signal conditioning circuit and converter respectively, is subsequently sent to FIFO
Buffer carries out data buffer storage；First controller is fetched evidence from FIFO buffer, executes compression algorithm for compressed data
Be stored in SRAM memory in, the first controller from SRAM memory by after compression data read and be sent to by wireless module
Receiving unit.
3. a kind of portable tunnel as described in claim 1 dimensionally seismic wave forward probe system, it is characterized in that:
Rear class data-interface, rear class control interface and the rear class power interface of the receiving unit respectively with rear stage receiving unit
Prime data-interface, prime control interface is connected with prime power interface；The rear class data-interface of afterbody receiving unit,
Rear class control interface and rear class power interface are connected with the data-interface of main control unit, control interface and power interface respectively.
4. a kind of portable tunnel as described in claim 1 dimensionally seismic wave forward probe system, it is characterized in that: the master control
Unit includes dma controller, high precision clock, trigger signal detection module, second controller, power module and USB module,
The data received are sent to second controller by dma controller, after second controller decompresses the compressed data received, are led to
It crosses USB module and is sent to industrial personal computer via USB data line；Control life is carried out by USB module between industrial personal computer and second controller
It enables, the interaction of answer signal and status information；Industrial personal computer is powered by power module to main control unit；High precision clock can be the
Two controllers provide high-precision clock source signals；When work is in triggering collection mode, focus generates after tapping tunnel surrounding
One trigger signal, after trigger signal detection module detects trigger signal, notice second controller generates triggering collection
Control command.
5. a kind of portable tunnel as described in claim 1 dimensionally seismic wave forward probe system, it is characterized in that: the industry control
Corresponding control command is sent to main control unit by machine, is successively sent to multiple transmittings after main control unit resolve command and by order
Unit returns to answer signal, multiple answer signals that main control unit will receive to main control unit after transmitting unit resolve command
It returns in the status display interface of industrial personal computer；
Or the industrial personal computer is independently controlled each transmitting unit.
6. a kind of portable tunnel as described in claim 1 dimensionally seismic wave forward probe system, it is characterized in that:
The transmitting unit has unique ID, and the position of the three-component geophone of each ID transmitting unit and connection corresponds,
The i.e. same ID transmitting unit placement location it is constant and connect it is different detection positions wave detector when redefine data processing
Sequence, while refusing to access the transmitting unit of illegal ID.
7. a kind of portable tunnel as claimed in claim 6 dimensionally seismic wave forward probe system, it is characterized in that:
The ID of the transmitting unit is made of 2 bytes, and high byte is group address, and low byte is terminal address；
The group address refers to that this high byte is worth the one of all terminals composition that identical, RF channel is identical, terminal address is different
Group；
The terminal address is same group address, the identical and different low byte value of RF channel, to distinguish each receiving unit and hair
Penetrate unit；
The same group address, the receiving unit of difference RF channel and transmitting unit are not one group；
Described same group, when needing to increase new terminal, as long as configuration transmitting unit is identical group number, RF channel and different ends
End number can be completed.
8. the triggering based on portable tunnel such as of any of claims 1-7 dimensionally seismic wave forward probe system is adopted
Integrated mode working method, it is characterized in that:
Carry out parameter setting, including data save location, sample rate and acquisition time, main control unit is in the form broadcasted to multiple
Transmitting unit sends synch command and carries out time synchronization, and main control unit detects that focus taps the trigger signal that tunnel surrounding generates
The order for issuing starting acquisition to all transmitting units in the form of broadcast afterwards, realizes all transmitting units log-on data in the same time
Data after AD conversion are stored in SRAM memory by acquisition, each transmitting unit；After reaching the acquisition time of setting, hair
It penetrates unit to stop AD conversion and the data of storage are wirelessly sent to receiving unit, main control unit is single by multiple receptions
It is transmitted in industrial personal computer after the data summarization that member receives by wired mode, shows number in the form of waveform in last industrial personal computer
According to.
9. the continuous acquisition mode work based on portable tunnel as claimed in claim 2 dimensionally seismic wave forward probe system
Method, it is characterized in that:
Carry out parameter setting, including data save location and sample rate, main control unit is in the form broadcasted to multiple transmitting units
It sends synch command and carries out time synchronization, then carry out velocity test, obtain current wireless data transmission speed；
Transmitting unit starts AD conversion, and the data after conversion are stored in SRAM memory, repeats this process until stopping
Until only acquiring；While AD conversion and SRAM store, transmitting unit carries out wireless data transmission simultaneously, will be stored
Data are sent out, and constantly show the data received in the form of waveform；
During continuous acquisition, it is synchronous to carry out clock automatically at regular intervals.
10. working method as described in claim 9 is based on, it is characterized in that: determining transmitting unit by the data after AD conversion
Store speed v in SRAM memoryw, obtain current wireless data transmission speed vt, obtain speed multiple n=[vw/vt],
SRAM memory is divided into a data field (n+1)；
Storage pointer is initially directed to the first data field, and the data after AD conversion are stored the first data field into the first data field
Storage pointer is moved to the second data field after storage is full, repeats the above process, after data field (n+1) storage is full, storage
Pointer circulation is directed toward the first data field, and constantly circulation stores and send data.
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| CN110133712B (en) * | 2019-06-05 | 2021-05-18 | 中煤科工集团西安研究院有限公司 | Synchronous trigger device for mine seismic exploration time-delay explosive source |
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Denomination of invention: A Portable Tunnel Seismic Wave Advance Detection System and Method Effective date of registration: 20230830 Granted publication date: 20190326 Pledgee: Qilu Bank Co.,Ltd. Jinan Kaiyuan Branch Pledgor: Shandong bai20 Huitong Engineering Technology Co.,Ltd. Registration number: Y2023980054639 |